CN109796323A - Benzenpropanoic acid preparation method and system - Google Patents
Benzenpropanoic acid preparation method and system Download PDFInfo
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- CN109796323A CN109796323A CN201910120167.4A CN201910120167A CN109796323A CN 109796323 A CN109796323 A CN 109796323A CN 201910120167 A CN201910120167 A CN 201910120167A CN 109796323 A CN109796323 A CN 109796323A
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Abstract
The present invention provides a kind of benzenpropanoic acid preparation method and system.The benzenpropanoic acid preparation method includes: to be put into amino acid solution in reactor tank with lytic agent to carry out dissolution stirring and react standing；PH regulator and heating stirring are added in the reactor tank, until the current pH value of solution is equal to PH threshold value in the reactor tank；Benzenpropanal and catalyst are added in the reactor tank, and continues to inject oxygen, carries out oxidation reaction between the benzenpropanal and the oxygen to control；Heating persistently is carried out to the reactor tank and when the Current Temperatures in the reactor tank are equal to temperature threshold, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, to obtain crude benzol propionic acid；Crude benzol propionic acid injection low pressure separation pot is subjected to low pressure separation, and heating rectifying is carried out to the crude benzol propionic acid after separation, to obtain refining benzene propionic acid.Benzenpropanoic acid preparation method and system provided by the invention have the advantages that easy to operate, using flexible, preparation stability are high.
Description
Technical field
The present invention relates to benzenpropanoic acid preparation technical field more particularly to a kind of benzenpropanoic acid preparation methods and system.
Background technique
Benzenpropanoic acid (3- benzenpropanoic acid, Hydrocinnamic acid, CAS:501-52-0), molecular formula: C9H10O2, molecule
Amount: 150.1745.Benzenpropanoic acid is the fixastive of fragrance, is used as medicine intermediate, is also used for organic synthesis, it may also be used for baking food
Product, pudding, frozen dairy product etc..Drug and fragrance are wanted with improvement of living standard, the mankind with the development of science and technology
Ask higher and higher, and demand is increasing, now per being increased every year with 20% speed, development prospect is very good, therefore,
In phenylpropyl alcohol acid preparation process, the problem of stability and preparation efficiency, is increasingly paid attention to by people.
Existing phenylpropyl alcohol acid preparation process is cumbersome, larger by environmental disturbances, so that the preparation stability of benzenpropanoic acid is poor,
And then cause the preparation efficiency of benzenpropanoic acid low, reduce production efficiency.
Summary of the invention
The technical problem to be solved by the present invention is to provide the high benzenpropanoic acids of a kind of easy to operate, using flexible, preparation stability
Preparation method and system.
In order to solve the above technical problems, benzenpropanoic acid preparation method provided by the invention, comprising:
Amino acid solution is put into reactor tank with lytic agent and carries out dissolution stirring and reacts standing；
PH regulator and heating stirring are added in the reactor tank, up to the current pH value etc. of solution in the reactor tank
In PH threshold value；
Benzenpropanal and catalyst are added in the reactor tank, and continues to inject oxygen, to control the benzenpropanal and institute
It states and carries out oxidation reaction between oxygen；
Persistently to the reactor tank carry out heating and when the Current Temperatures in the reactor tank be equal to temperature threshold when, with institute
Temperature threshold continuous heating is stated, until the benzenpropanal is fully oxidized, to obtain crude benzol propionic acid；
Crude benzol propionic acid injection low pressure separation pot is subjected to low pressure separation, and the crude benzol propionic acid after separation is carried out
Rectifying is heated, to obtain refining benzene propionic acid.
Preferably, before described the step of benzenpropanal and catalyst are added in the reactor tank, the method also includes:
Pressurization or pressure release processing are carried out to the reactor tank, until the current gas pressure in the reactor tank is in preset pressure model
In enclosing, the pre-set pressure range is 2.1MPa to 2.5MPa.
Preferably, the rectifying number of the heating rectifying is four times, and the heating temperature of the heating rectifying is sequentially 110
DEG C, 120 DEG C, 130 DEG C and 140 DEG C.
Preferably, before described the step of crude benzol propionic acid injection low pressure separation pot is carried out low pressure separation, the side
Method further include:
Inert gas is injected in the reactor tank, the inert gas is using a kind of or several in neon, Krypton or xenon
The mixed gas of kind.
Preferably, the PH threshold value is 10, and the temperature threshold is 105 DEG C.
Preferably, the lytic agent is distilled water, and the catalyst is calcium propionate.
Preferably, the oxidization time of the oxidation reaction is 9 hours, and the time of repose that the reaction is stood is 1 hour.
Compared with the relevant technologies, benzenpropanoic acid preparation method provided by the invention, have the following beneficial effects: by using
Benzenpropanal is that raw material carries out oxidation reaction, and to prepare benzenpropanoic acid, above-mentioned benzenpropanoic acid preparation method is easy to operate, using flexible, system
Standby stability is high.
The present invention provides also a kind of benzenpropanoic acid preparation system, the system comprises:
PH adjustment module carries out dissolution and stirring and reacts quiet for amino acid solution to be put into reactor tank with lytic agent
It sets, PH regulator and heating stirring is added in the reactor tank, until the current pH value of solution is equal to PH in the reactor tank
Threshold value；
Oxidation module for benzenpropanal and catalyst to be added in the reactor tank, and continues to inject oxygen, to control
It states and carries out oxidation reaction between benzenpropanal and the oxygen, persistently the reactor tank heat and when in the reactor tank
When Current Temperatures are equal to temperature threshold, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, to obtain
Crude benzol propionic acid；
Rectifying module, for crude benzol propionic acid injection low pressure separation pot to be carried out low pressure separation, and to the institute after separation
It states crude benzol propionic acid and carries out heating rectifying, to obtain refining benzene propionic acid.
Preferably, the oxidation module is also used to: carrying out pressurization to the reactor tank or pressure release is handled, until the reaction
For current gas pressure in tank in pre-set pressure range, the pre-set pressure range is 2.1MPa to 2.5MPa.
Preferably, the rectifying module includes multiple rectification cells, and the heating temperature of multiple rectification cells is sequentially
110 DEG C, 120 DEG C, 130 DEG C and 140 DEG C.
Compared with the relevant technologies, benzenpropanoic acid preparation system provided by the invention, have the following beneficial effects: by using
Benzenpropanal is that raw material carries out oxidation reaction, and to prepare benzenpropanoic acid, above-mentioned benzenpropanoic acid preparation system is easy to operate, using flexible, system
Standby stability is high.
Detailed description of the invention
Fig. 1 is the step flow chart for the benzenpropanoic acid preparation method that first embodiment of the invention provides；
Fig. 2 is the step flow chart for the benzenpropanoic acid preparation method that second embodiment of the invention provides；
Fig. 3 is the structural schematic diagram for the benzenpropanoic acid preparation system that third embodiment of the invention provides.
Figure label: 100, benzenpropanoic acid preparation system, 10, PH adjustment module, 11, oxidation module, 12, rectifying module.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments
Embodiment one
Referring to Fig. 1, the step flow chart of the benzenpropanoic acid preparation method provided for first embodiment of the invention, including step
It is rapid:
Amino acid solution is put into reactor tank with lytic agent and carries out dissolution stirring and react standing by step S10；
Wherein, the time of repose that the reaction is stood is 1 hour, and the lytic agent is distilled water, and the reactor tank uses
The ellipsoidal structure of stainless steel material is made, and the reactor tank is equipped with multiple feeding inlets, which is equipped with end cap, described
Amino acid solution and the lytic agent pass through the corresponding feeding inlet progress pan feeding operation, it is preferred that on the reaction pot sidewall
Equipped with stirring motor, the agitating shaft of the stirring motor runs through the reactor tank, which is equipped with blender, this is stirred
Device is mixed for being stirred to the amino acid solution with lytic agent under the drive of the stirring motor, so that the amino acid
Solution is mixed with lytic agent；
PH regulator and heating stirring is added in step S20 in the reactor tank, until solution is worked as in the reactor tank
Preceding pH value is equal to PH threshold value；
Wherein, the PH threshold value is 10, and PH sensor is equipped in the reactor tank, and the PH sensor is used for real-time detection
PH value in the reactor tank issues prompt when the current PH that the PH sensor detects is equal to the PH threshold value
Alarm, and control the stirring motor and blender stopping stirring；
Benzenpropanal and catalyst is added in step S30 in the reactor tank, and continues to inject oxygen, to control the benzene
Oxidation reaction is carried out between propionic aldehyde and the oxygen；
Wherein, the oxidization time of the oxidation reaction is 9 hours, and the catalyst is calcium propionate, is set in the reactor tank
There are multiple air inlet pipe, the air inlet pipe is used to facilitate the injection of the oxygen, to ensure the normal of the benzenpropanal oxidation reaction
It carries out, and then has effectively ensured the preparation efficiency of the benzenpropanoic acid preparation method, and in the step, be by using benzenpropanal
Raw material carries out oxidation reaction, to prepare benzenpropanoic acid；
Step S40 persistently heat and when the Current Temperatures in the reactor tank are equal to temperature threshold to the reactor tank
When value, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, to obtain crude benzol propionic acid；
Wherein, the temperature threshold is 105 DEG C, specifically, temperature sensor and heater are equipped in the reactor tank, it should
Temperature sensor is for the reaction temperature in reactor tank described in real-time detection, when the reactor tank detects described Current Temperatures etc.
When temperature threshold, the heater is controlled with temperature threshold and carries out heated at constant temperature, to promote the benzenpropanal persistently to carry out oxygen
Change reaction, and then effectively ensured the progress of the benzenpropanal oxidation reaction, ensures the system of the benzenpropanoic acid preparation method
Standby efficiency；
Crude benzol propionic acid injection low pressure separation pot is carried out low pressure separation by step S50, and to the crude benzol after separation
Propionic acid carries out heating rectifying, to obtain refining benzene propionic acid；
Wherein, the rectifying number of the heating rectifying is four times, and the heating temperature of the heating rectifying is sequentially 110
DEG C, 120 DEG C, 130 DEG C and 140 DEG C, specifically, in the present embodiment be equipped with multiple rectifying columns, the heating temperature of different rectifying columns can
With identical or not identical, the rectifying column is for carrying out heating rectifying to the crude benzol propionic acid, so as in the crude benzol propionic acid
Impurity be effectively separated, to ensure the purity of benzenpropanoic acid being prepared, and then effectively raise the benzenpropanoic acid system
The preparation efficiency of Preparation Method；
It is that raw material carries out oxidation reaction by using benzenpropanal, to prepare benzenpropanoic acid, above-mentioned benzenpropanoic acid system in the present embodiment
Preparation Method is easy to operate, using flexible, prepares stability height, by the design to crude benzol propionic acid progress low pressure separation, has
The impurity of effect reduced in the crude benzol propionic acid, improves the purity of benzenpropanoic acid, and by adding to the crude benzol propionic acid
The design of thermal rectification further effectively eliminates the impurity in benzenpropanoic acid, and then has effectively ensured the phenylpropyl alcohol being prepared
The purity of acid, improves preparation efficiency.
Embodiment two
Referring to Fig. 2, the step flow chart of the benzenpropanoic acid preparation method provided for second embodiment of the invention, including step
It is rapid:
Amino acid solution is put into reactor tank with lytic agent and carries out dissolution stirring and react standing by step S11；
Wherein, the time of repose that the reaction is stood is 1 hour, and the lytic agent is distilled water, and the reactor tank uses
The ellipsoidal structure of stainless steel material is made, and the reactor tank is equipped with multiple feeding inlets, which is equipped with end cap, described
Amino acid solution and the lytic agent pass through the corresponding feeding inlet progress pan feeding operation, it is preferred that on the reaction pot sidewall
Equipped with stirring motor, the agitating shaft of the stirring motor runs through the reactor tank, which is equipped with blender, this is stirred
Device is mixed for being stirred to the amino acid solution with lytic agent under the drive of the stirring motor, so that the amino acid
Solution is mixed with lytic agent；
PH regulator and heating stirring is added in step S21 in the reactor tank, until solution is worked as in the reactor tank
Preceding pH value is equal to PH threshold value；
Wherein, the PH threshold value is 10, and PH sensor is equipped in the reactor tank, and the PH sensor is used for real-time detection
PH value in the reactor tank issues prompt when the current PH that the PH sensor detects is equal to the PH threshold value
Alarm, and control the stirring motor and blender stopping stirring；
Step S31 carries out pressurization to the reactor tank or pressure release is handled, until the current gas pressure in the reactor tank is pre-
If in pressure limit, the pre-set pressure range is 2.1MPa to 2.5MPa；
Benzenpropanal and catalyst is added in step S41 in the reactor tank, and continues to inject oxygen, to control the benzene
Oxidation reaction is carried out between propionic aldehyde and the oxygen；
Wherein, the oxidization time of the oxidation reaction is 9 hours, and the catalyst is calcium propionate, is set in the reactor tank
There are multiple air inlet pipe, the air inlet pipe is used to facilitate the injection of the oxygen, to ensure the normal of the benzenpropanal oxidation reaction
It carries out, and then has effectively ensured the preparation efficiency of the benzenpropanoic acid preparation method, and in the step, be by using benzenpropanal
Raw material carries out oxidation reaction, to prepare benzenpropanoic acid；
Step S51 persistently heat and when the Current Temperatures in the reactor tank are equal to temperature threshold to the reactor tank
When value, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, to obtain crude benzol propionic acid；
Wherein, the temperature threshold is 105 DEG C, specifically, temperature sensor and heater are equipped in the reactor tank, it should
Temperature sensor is for the reaction temperature in reactor tank described in real-time detection, when the reactor tank detects described Current Temperatures etc.
When temperature threshold, the heater is controlled with temperature threshold and carries out heated at constant temperature, to promote the benzenpropanal persistently to carry out oxygen
Change reaction, and then effectively ensured the progress of the benzenpropanal oxidation reaction, ensures the system of the benzenpropanoic acid preparation method
Standby efficiency；
Step S61 injects inert gas in the reactor tank, and the inert gas is using in neon, Krypton or xenon
One or more of mixed gas；
Crude benzol propionic acid injection low pressure separation pot is carried out low pressure separation by step S71, and to the crude benzol after separation
Propionic acid carries out heating rectifying, to obtain refining benzene propionic acid；
Wherein, the rectifying number of the heating rectifying is four times, and the heating temperature of the heating rectifying is sequentially 110
DEG C, 120 DEG C, 130 DEG C and 140 DEG C, specifically, in the present embodiment be equipped with multiple rectifying columns, the heating temperature of different rectifying columns can
With identical or not identical, the rectifying column is for carrying out heating rectifying to the crude benzol propionic acid, so as in the crude benzol propionic acid
Impurity be effectively separated, to ensure the purity of benzenpropanoic acid being prepared, and then effectively raise the benzenpropanoic acid system
The preparation efficiency of Preparation Method；
It is that raw material carries out oxidation reaction by using benzenpropanal, to prepare benzenpropanoic acid, above-mentioned benzenpropanoic acid system in the present embodiment
Preparation Method is easy to operate, using flexible, prepares stability height, by the design to crude benzol propionic acid progress low pressure separation, has
The impurity of effect reduced in the crude benzol propionic acid, improves the purity of benzenpropanoic acid, and by adding to the crude benzol propionic acid
The design of thermal rectification further effectively eliminates the impurity in benzenpropanoic acid, and then has effectively ensured the phenylpropyl alcohol being prepared
The purity of acid, improves preparation efficiency.
Embodiment three
Referring to Fig. 3, the structural schematic diagram of the benzenpropanoic acid preparation system 100 provided for third embodiment of the invention, comprising:
PH adjustment module 10 carries out dissolution and stirring and reacts quiet for amino acid solution to be put into reactor tank with lytic agent
It sets, PH regulator and heating stirring is added in the reactor tank, until the current pH value of solution is equal to PH in the reactor tank
Threshold value, wherein the time of repose that the reaction is stood is 1 hour, and the lytic agent is distilled water, and the reactor tank is using stainless
The ellipsoidal structure of steel material is made, and the reactor tank is equipped with multiple feeding inlets, which is equipped with end cap, the amino
Acid solution and the lytic agent pass through the corresponding feeding inlet progress pan feeding operation, it is preferred that the reaction pot sidewall is equipped with
Stirring motor, the agitating shaft of the stirring motor run through the reactor tank, which is equipped with blender, the blender
For being stirred to the amino acid solution with lytic agent under the drive of the stirring motor, so that the amino acid solution
It is mixed with lytic agent.
Specifically, PH threshold value described in the PH adjustment module 10 is 10, PH sensor is equipped in the reactor tank, it is described
PH sensor is for the pH value in reactor tank described in real-time detection, when the current PH that the PH sensor detects is equal to institute
When stating PH threshold value, prompt alarm is issued, and controls the stirring motor and blender stopping stirring.
Oxidation module 11 for benzenpropanal and catalyst to be added in the reactor tank, and continues to inject oxygen, with control
Oxidation reaction is carried out between the benzenpropanal and the oxygen, persistently the reactor tank heat and when in the reactor tank
Current Temperatures when being equal to temperature threshold, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, with
To crude benzol propionic acid, wherein the oxidization time of the oxidation reaction is 9 hours, and the catalyst is calcium propionate, in the reactor tank
Equipped with multiple air inlet pipe, the air inlet pipe is used to facilitate the injection of the oxygen, to ensure the benzenpropanal oxidation reaction just
It often carries out, and then has effectively ensured the preparation efficiency of the benzenpropanoic acid preparation system 100, and in the module, by using benzene
Propionic aldehyde is that raw material carries out oxidation reaction, to prepare benzenpropanoic acid, it is preferred that the temperature threshold is 105 DEG C, specifically, described anti-
It answers and is equipped with temperature sensor and heater in tank, which is used for the reaction temperature in reactor tank described in real-time detection,
When the reactor tank detects that the Current Temperatures are equal to temperature threshold, the heater is controlled with temperature threshold and carries out constant temperature
Heating, to promote the benzenpropanal persistently to carry out oxidation reaction, and then effectively ensured the benzenpropanal oxidation reaction into
Row, has ensured the preparation efficiency of the benzenpropanoic acid preparation system 100.
Rectifying module 12, for by the crude benzol propionic acid injection low pressure separation pot carry out low pressure separation, and to separation after
The crude benzol propionic acid carries out heating rectifying, to obtain refining benzene propionic acid.
In addition, the rectifying module 12 is also used in the present embodiment: inert gas is injected in the reactor tank, it is described
Inert gas is using mixed gas one or more of in neon, Krypton or xenon.
Preferably, the oxidation module 11 is also used to: carrying out pressurization to the reactor tank or pressure release is handled, until described anti-
Answer the current gas pressure in tank in pre-set pressure range, the pre-set pressure range is 2.1MPa to 2.5MPa, the rectifying mould
Block 12 includes multiple rectification cells, and the heating temperature of multiple rectification cells is sequentially 110 DEG C, 120 DEG C, 130 DEG C and 140
DEG C, specifically, being equipped with multiple rectifying columns in the present embodiment, the heating temperature of different rectifying columns can be identical or not identical, described
Rectifying column is for carrying out heating rectifying to the crude benzol propionic acid, so as to the impurity in the crude benzol propionic acid is effectively separated,
To ensure the purity for the benzenpropanoic acid being prepared, and then effectively raise the preparation efficiency of the benzenpropanoic acid preparation system 100.
The present embodiment is that raw material carries out oxidation reaction by using benzenpropanal, to prepare benzenpropanoic acid, above-mentioned benzenpropanoic acid preparation
System 100 is easy to operate, using flexible, prepares stability height, by the design to crude benzol propionic acid progress low pressure separation, has
The impurity of effect reduced in the crude benzol propionic acid, improves the purity of benzenpropanoic acid, and by adding to the crude benzol propionic acid
The design of thermal rectification further effectively eliminates the impurity in benzenpropanoic acid, and then has effectively ensured the phenylpropyl alcohol being prepared
The purity of acid, improves preparation efficiency.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of benzenpropanoic acid preparation method characterized by comprising
Amino acid solution is put into reactor tank with lytic agent and carries out dissolution stirring and reacts standing；
PH regulator and heating stirring are added in the reactor tank, until the current pH value of solution is equal to PH in the reactor tank
Threshold value；
Benzenpropanal and catalyst are added in the reactor tank, and continues to inject oxygen, to control the benzenpropanal and the oxygen
Oxidation reaction is carried out between gas；
Persistently to the reactor tank carry out heating and when the Current Temperatures in the reactor tank be equal to temperature threshold when, with the temperature
Threshold duration heating is spent, until the benzenpropanal is fully oxidized, to obtain crude benzol propionic acid；
Crude benzol propionic acid injection low pressure separation pot is subjected to low pressure separation, and the crude benzol propionic acid after separation is heated
Rectifying, to obtain refining benzene propionic acid.
2. benzenpropanoic acid preparation method according to claim 1, which is characterized in that described that phenylpropyl alcohol is added in the reactor tank
Before the step of aldehyde and catalyst, the method also includes:
Pressurization or pressure release processing are carried out to the reactor tank, until the current gas pressure in the reactor tank is in pre-set pressure range
Interior, the pre-set pressure range is 2.1MPa to 2.5MPa.
3. benzenpropanoic acid preparation method according to claim 1, which is characterized in that the rectifying number of the heating rectifying is four
It is secondary, and the heating temperature of the heating rectifying is sequentially 110 DEG C, 120 DEG C, 130 DEG C and 140 DEG C.
4. benzenpropanoic acid preparation method according to claim 1, which is characterized in that described that the crude benzol propionic acid is injected low pressure
Before knockout drum carries out the step of low pressure separation, the method also includes:
Inert gas is injected in the reactor tank, the inert gas is using one or more of in neon, Krypton or xenon
Mixed gas.
5. benzenpropanoic acid preparation method according to claim 1, which is characterized in that the PH threshold value is 10, the temperature threshold
Value is 105 DEG C.
6. benzenpropanoic acid preparation method according to claim 1, which is characterized in that the lytic agent is distilled water, described to urge
Agent is calcium propionate.
7. benzenpropanoic acid preparation method according to claim 1, which is characterized in that the oxidization time of the oxidation reaction is 9
Hour, the time of repose that the reaction is stood is 1 hour.
8. a kind of benzenpropanoic acid preparation system, which is characterized in that the system comprises:
PH adjustment module carries out dissolution and stirring and reacts standing for amino acid solution to be put into reactor tank with lytic agent,
PH regulator and heating stirring are added in the reactor tank, until the current pH value of solution is equal to PH threshold value in the reactor tank；
Oxidation module for benzenpropanal and catalyst to be added in the reactor tank, and continues to inject oxygen, to control the benzene
Oxidation reaction is carried out between propionic aldehyde and the oxygen, persistently the reactor tank heat and when current in the reactor tank
When temperature is equal to temperature threshold, with the temperature threshold continuous heating, until the benzenpropanal is fully oxidized, to obtain crude benzol
Propionic acid；
Rectifying module, for crude benzol propionic acid injection low pressure separation pot to be carried out low pressure separation, and to described thick after separation
Benzenpropanoic acid carries out heating rectifying, to obtain refining benzene propionic acid.
9. benzenpropanoic acid preparation system according to claim 8, which is characterized in that the oxidation module is also used to: to described
Reactor tank carries out pressurization or pressure release processing, until the current gas pressure in the reactor tank is in pre-set pressure range, it is described default
Pressure limit is 2.1MPa to 2.5MPa.
10. benzenpropanoic acid preparation system according to claim 8, which is characterized in that the rectifying module includes multiple rectifying
Unit, the heating temperature of multiple rectification cells are sequentially 110 DEG C, 120 DEG C, 130 DEG C and 140 DEG C.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018757A (en) * | 2005-09-07 | 2007-08-15 | Lg化学株式会社 | Preparation of organic acids from aldehyde compounds by means of liquid phase oxidation reaction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101018757A (en) * | 2005-09-07 | 2007-08-15 | Lg化学株式会社 | Preparation of organic acids from aldehyde compounds by means of liquid phase oxidation reaction |
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